pgr_maxFlowMinCost_Cost
— Calculates the minmum cost maximum flow in a directed graph from the source(s) to the targets(s).
Warning
Possible server crash
Warning
Experimental functions
Availability
Support
The main characteristics are:
Summary
pgr_maxFlowMinCost_Cost(Edges SQL, source, target)
pgr_maxFlowMinCost_Cost(Edges SQL, sources, target)
pgr_maxFlowMinCost_Cost(Edges SQL, source, targets)
pgr_maxFlowMinCost_Cost(Edges SQL, sources, targets)
RETURNS FLOAT
pgr_maxFlowMinCost_Cost(Edges SQL, source, target)
RETURNS FLOAT
Example:  From vertex \(2\) to vertex \(3\) 

SELECT * FROM pgr_MaxFlowMinCost_Cost(
'SELECT id,
source, target,
capacity, reverse_capacity,
cost, reverse_cost FROM edge_table',
2, 3
);
pgr_maxflowmincost_cost

400
(1 row)
pgr_maxFlowMinCost_Cost(Edges SQL, source, targets)
RETURNS FLOAT
Example:  From vertex \(13\) to vertices \(\{7, 1, 4\}\) 

SELECT * FROM pgr_MaxFlowMinCost_Cost(
'SELECT id,
source, target,
capacity, reverse_capacity,
cost, reverse_cost FROM edge_table',
13, ARRAY[7, 1, 4]
);
pgr_maxflowmincost_cost

450
(1 row)
pgr_maxFlowMinCost_Cost(Edges SQL, sources, target)
RETURNS FLOAT
Example:  From vertices \(\{1, 7, 14\}\) to vertex \(12\) 

SELECT * FROM pgr_MaxFlowMinCost_Cost(
'SELECT id,
source, target,
capacity, reverse_capacity,
cost, reverse_cost FROM edge_table',
ARRAY[1, 7, 14], 12
);
pgr_maxflowmincost_cost

650
(1 row)
pgr_maxFlowMinCost_Cost(Edges SQL, sources, targets)
RETURNS FLOAT
Example:  From vertices \(\{7, 13\}\) to vertices \(\{3, 9\}\) 

SELECT * FROM pgr_MaxFlowMinCost_Cost(
'SELECT id,
source, target,
capacity, reverse_capacity,
cost, reverse_cost FROM edge_table',
ARRAY[7, 13], ARRAY[3, 9]
);
pgr_maxflowmincost_cost

600
(1 row)
Column  Type  Default  Description 

Edges SQL  TEXT 
The edges SQL query as described in Inner Query.  
source  BIGINT 
Identifier of the starting vertex of the flow.  
sources  ARRAY[BIGINT] 
Array of identifiers of the starting vertices of the flow.  
target  BIGINT 
Identifier of the ending vertex of the flow.  
targets  ARRAY[BIGINT] 
Array of identifiers of the ending vertices of the flow. 
Edges SQL:  an SQL query of a directed graph of capacities, which should return a set of rows with the following columns: 

Column  Type  Default  Description 

id  ANYINTEGER 
Identifier of the edge.  
source  ANYINTEGER 
Identifier of the first end point vertex of the edge.  
target  ANYINTEGER 
Identifier of the second end point vertex of the edge.  
capacity  ANYINTEGER 
Capacity of the edge (source, target)


reverse_capacity  ANYINTEGER 
1  Capacity of the edge (target, source),

cost  ANYNUMERICAL 
Weight of the edge (source, target) if it exists.  
reverse_cost  ANYNUMERICAL 
0  Weight of the edge (target, source) if it exists. 
Where:
ANYINTEGER:  SMALLINT, INTEGER, BIGINT 

ANYNUMERICAL:  smallint, int, bigint, real, float 
Type  Description 

FLOAT 
Minimum Cost Maximum Flow possible from the source(s) to the target(s) 